Libertarians like to think of themselves as economically literate, at least when compared to other political groups, and for the most part, I believe that’s true. But there are at least three mistakes that I keep hearing even libertarians make when talking about the free market.

At Oxford, a debate about whether “abortion culture harms us all” was canceled due to student protest. A performance of The Vagina Monologues met with the same fate at Mount Holyoke College because it excludes, and thus might offend, trans women. At Brown University, a group of students organized a “safe space” so that students who found a scheduled debate about how universities should handle sexual assault too upsetting had somewhere to go. One student who availed herself of the safe space suggested that she felt “bombarded by a lot of viewpoints that really go against my dearly and closely held beliefs,” and so she had to leave the debate.